Pin buildx version

Author: danielhollas

.github/workflows/build.yml

@@ -49,6 +49,8 @@ jobs:
 
             - name: Set up Docker Buildx
               uses: docker/setup-buildx-action@v3
+              with:
+                  version: 0.29.1
 
             - name: Login to GitHub Container Registry 🔑
               uses: docker/login-action@v3